METHOD AND SYSTEM FOR PREDICTING THE TIME REQUIRED FOR LOW VOLTAGE EXPRESSION OF A SECONDARY BATTERY, AND AGING METHOD OF THE SECONDARY BATTERY USING THE SAME

A method and system for predicting the time required for low voltage expression of a secondary battery, including (a) obtaining a leakage current by inputting a voltage of a battery cell of the secondary battery, measuring a freezing resistance of a battery cell, and dividing an input voltage by a measured freezing resistance, (b) obtaining a discharge capacity difference by setting a reference value of a voltage drop for selecting a low voltage defect and obtaining a discharge capacity difference between the input voltage and a voltage dropped therefrom by the reference value, and (c) dividing the discharge capacity difference by the leakage current to thereby calculate a time required for low voltage expression.